Is there an adapter for Digital TV audio optical output to USB input of OPPO Blu-Ray player? The OPPO players have analog audio out jacks plus remotes with volume controls and an input switch that enable them to take the place of surround sound processors. I'd run my TV audio into one, and my Roku box into it's HDMI, connect the OPPO direct to a power amp and save the cost of a preamp/processor. I'm using broadcast TV, not cable.